Gift voucher code cracking $(50$ marks$)$

An online shopping retailer runs a server to generate gift voucher codes for customers. More precisely, the server will generate a gift voucher code if it receives a client ID from the customer$$s machine and sends the generated gift voucher code to the customer. The known technical detail about this system is that the server provides this service using UDP on a port between $12345$ and $12500$ and uses the MD$5$ hash function to generate the voucher code.

The gift voucher code has monetary value and is sent to the customer for a certain period only. However, as a hacker, you discovered that the server admin forgot to close the port for the service. You want to generate valid gift voucher codes on your own using many client IDs you collected from information gathering.

Your task is to answer the following questions as the hacker.

a$)$ Runtheserverprogramprovidedwiththisspecificationonthe Ubuntu VM by typing $./$executable$\_$server on the terminal. Then, use an appropriate tool you learned in CSCI$369$ to identify the open port between $12345$ and $12500$ for this service. $(15$ marks$)$

b$)$ Assumethatyouuseyour$7-$digitUOWstudentnumberasaclient ID$.$ Based on the port identified from a$),$ use an appropriate tool